PORTLAND WSO CITY, OREGON

Monthly Total Heating Degree Days

(356761)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 197306
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
Months with 5 missing days or less use mean for missing day(s)
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.
YEAR(S JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
1928 818.00 602.50 440.00 407.50 120.50 95.50 26.00 18.00 130.00 321.50 555.50 770.50 4305.50
1929 956.50 821.00 537.00 474.50 210.50 113.00 9.00 9.00 70.50 207.00 607.50 610.50 4626.00
1930 1144.50 523.50 457.50 276.50 309.00 111.50 32.50 3.50 90.00 349.50 569.00 760.50 4627.50
1931 628.50 560.00 502.00 298.50 135.50 82.00 2.50 7.00 110.50 286.00 631.00 771.00 4014.50
1932 783.00 682.50 529.50 349.50 230.00 83.00 36.00 27.00 59.00 268.50 470.00 833.50 4351.50
1933 779.00 750.50 557.00 400.00 346.00 106.00 9.50 29.00 167.00 248.50 554.50 569.00 4516.00
1934 561.00 436.50 303.00 178.00 142.00 71.00 9.50 7.00 111.50 245.00 441.00 648.00 3153.50
1935 761.50 525.50 649.50 398.50 224.00 75.50 54.00 27.00 26.00 364.50 679.00 709.00 4494.00
1936 646.50 902.00 610.00 288.00 156.00 51.00 2.50 1.50 82.50 214.50 584.00 659.50 4198.00
1937 1089.50 651.00 475.00 448.50 208.00 61.50 14.50 33.50 88.50 182.50 460.00 650.00 4362.50
1938 732.00 606.00 561.00 319.00 217.50 65.50 22.00 20.00 19.00 242.00 604.50 661.50 4070.00
1939 659.00 672.00 484.50 279.00 164.50 130.00 15.00 12.00 58.50 263.50 451.00 577.50 3766.50
1940 706.50 516.50 408.50 295.00 114.00 41.00 2.50 0.50 47.50 208.00 622.50 651.50 3614.00
1941 647.00 451.00 312.50 256.50 216.00 77.00 2.00 18.50 113.00 268.50 470.00 657.00 3489.00
1942 880.00 582.50 527.50 324.00 249.50 126.00 2.50 13.00 51.50 237.00 559.00 643.00 4195.50
1943 929.50 523.50 553.00 287.00 265.50 136.50 20.00 14.00 29.00 278.50 492.50 710.50 4239.50
1944 737.00 606.00 549.00 375.00 209.50 107.50 16.00 18.50 70.00 152.00 536.00 762.00 4138.50
1945 637.50 551.00 587.50 408.00 176.50 115.50 17.50 14.00 109.00 289.50 547.00 696.50 4149.50
1946 695.50 571.50 540.50 365.00 140.00 120.50 21.00 23.00 94.50 389.00 587.50 656.50 4204.50
1947 804.50 477.00 399.00 289.50 108.50 96.00 9.50 28.50 66.50 270.50 497.00 619.50 3666.00
1948 727.00 656.00 586.50 463.50 251.00 46.00 32.00 20.00 125.50 304.00 594.83 a 797.73 a 4604.06
1949 1057.62 a 661.50 523.00 305.69 a 145.50 80.50 32.55 a 13.50 59.50 436.07 a 366.00 696.50 4377.92
1950 1104.50 646.00 583.00 429.00 263.50 106.00 13.95 a 13.50 92.50 361.00 518.50 521.50 4652.95
1951 767.50 567.00 676.50 267.00 214.50 51.50 17.50 27.00 53.50 298.00 536.00 798.50 4274.50
1952 849.50 651.50 590.50 321.00 204.50 127.00 13.00 9.50 51.50 132.50 661.00 659.50 4271.00
1953 512.00 552.00 548.50 402.00 283.50 174.00 17.00 21.00 63.00 245.00 427.50 618.50 3864.00
1954 765.00 565.00 602.50 414.50 210.00 184.00 46.00 45.00 102.00 293.00 405.00 698.50 4330.50
1955 738.50 646.00 695.50 526.00 323.00 132.00 72.50 26.00 111.50 288.50 663.50 736.50 4959.50
1956 691.30 a 799.50 596.00 314.50 168.00 140.50 20.67 a 29.50 67.50 354.00 576.50 708.35 a 4466.32
1957 1010.00 599.00 530.50 338.50 150.50 65.00 16.50 16.02 a 12.00 303.50 552.50 627.50 4221.52
1958 597.00 408.00 548.00 370.50 102.50 52.50 0.50 2.00 74.50 194.00 523.00 573.50 3446.00
1959 683.50 605.50 529.00 342.50 265.00 89.50 25.50 12.50 121.50 241.00 558.50 687.50 4161.50
1960 872.13 a 502.50 f 565.00 367.50 295.00 72.00 15.00 48.50 86.50 259.00 504.50 743.50 3828.63
1961 585.50 468.50 514.50 402.50 231.50 51.00 9.50 3.50 118.00 323.50 594.00 691.50 3993.50
1962 783.50 584.50 578.50 344.00 348.50 112.00 48.57 a 23.00 54.00 266.50 450.00 609.00 4202.07
1963 890.50 393.50 529.00 433.00 211.00 131.50 32.00 15.50 20.50 237.50 484.00 677.00 4055.00
1964 642.00 586.00 555.00 449.50 290.00 123.00 0.00 z 38.00 104.50 224.00 600.50 766.50 4379.00
1965 699.50 547.50 441.50 334.50 284.50 104.50 28.50 14.50 89.00 186.00 431.00 750.50 3911.50
1966 704.00 568.00 521.50 303.50 189.50 74.00 28.50 11.00 44.50 288.50 460.50 587.50 3781.00
1967 598.00 524.00 592.50 471.50 194.00 41.50 1.00 0.00 23.00 245.00 460.00 679.00 3829.50
1968 731.00 391.00 436.50 425.00 204.50 79.50 10.00 41.50 85.50 313.50 488.50 818.50 4025.00
1969 960.50 615.00 463.50 383.50 133.50 49.00 13.00 13.00 79.00 333.50 494.00 642.50 4180.00
1970 706.00 451.00 493.00 471.00 234.50 79.00 12.50 15.00 122.00 315.00 494.50 728.00 4121.50
1971 716.00 580.00 608.00 390.50 219.00 147.00 32.50 6.50 104.50 363.00 545.50 746.00 4458.50
1972 790.00 592.00 441.50 491.00 162.50 71.00 14.50 9.00 153.50 312.50 479.50 834.50 4351.50
1973 776.50 518.50 519.50 347.50 200.50 104.00 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 2466.50
Period of Record Statistics
MEAN 772.94 581.97 527.23 365.80 211.37 94.63 19.94 17.76 80.29 275.65 528.62 689.22 4156.30
S.D. 147.98 106.00 80.28 73.36 62.80 34.80 15.20 11.72 36.26 62.60 72.63 74.78 356.93
SKEW 0.80 0.67 -0.66 -0.01 0.28 0.43 1.28 0.72 0.09 0.08 0.06 0.05 -0.53
MAX 1144.50 902.00 695.50 526.00 348.50 184.00 72.50 48.50 167.00 436.07 679.00 834.50 4959.50
MIN 512.00 391.00 303.00 178.00 102.50 41.00 0.50 0.00 12.00 132.50 366.00 521.50 3153.50
NO YRS 46 45 46 46 46 46 44 45 45 45 45 45 43